There's nothing to substitute, and no solution,
until somebody gives you another equation.
Answer:
I think 3+×37p I think it the answer
Answer:220
Step-by-step explanation:
65+65+ 60+ 30
Answer:
4
Step-by-step explanation:
if the required number is 'x', then the sum of 2 times the number and 10 is 2x+10; the difference of the number and 1 is x-1. Using these two equation it is possible to make up the common one:
2x+10=6(x-1);
4x=16;
x=4.
